自己写一个简单的C++单词扫描程序。[5]

            case '+':
                strtoken = strtoken + ch;
                ch = buffer[++lnscptr];
                if(ch=='=')
                {
                 strtoken = strtoken + ch;
                 ch = buffer[++lnscptr];
                 print(linecount,strtoken,strgrdline,"+=运算符");
                 maketl(linecount,strtoken,"+=运算符");
                }
                else if(ch=='+')
                {
                 strtoken = strtoken + ch;
                 ch = buffer[++lnscptr];
                 print(linecount,strtoken,strgrdline,"递增运算符");
                 maketl(linecount,strtoken,"递增运算符");
                }
                else
                {
                 print(linecount,strtoken,strgrdline,"加号运算符");
                 maketl(linecount,strtoken,"加号运算符");
                }
                break;